85438257308 has 12 divisors (see below), whose sum is σ = 149527721280. Its totient is φ = 42716051232.

The previous prime is 85438257301. The next prime is 85438257319. The reversal of 85438257308 is 80375283458.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 85438257308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85438257301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 706316 + ... + 818387.

It is an arithmetic number, because the mean of its divisors is an integer number (12460643440).

Almost surely, 2^85438257308 is an apocalyptic number.

It is an amenable number.

85438257308 is a deficient number, since it is larger than the sum of its proper divisors (64089463972).

85438257308 is a wasteful number, since it uses less digits than its factorization.

85438257308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1538716 (or 1538714 counting only the distinct ones).

The product of its (nonzero) digits is 6451200, while the sum is 53.

The spelling of 85438257308 in words is "eighty-five billion, four hundred thirty-eight million, two hundred fifty-seven thousand, three hundred eight".